For my setup, as I described, there is no needfor a tilt plate. And, it would
still not give me accessto the vertical on top of the mast above my F12C-4XL
yagi. With my setup, I have access to ALLantennas with both feet on the ground.
The clamp assembly I use to hold the yagi fromrotating while tilted consists of
a piece of anglestock and two U-bolts.
YMMV
vy 73 es gl,Bryan WA7PRChttp://www.tinyurl.com/wa7prc-tower
Date: Fri, 3 Jul 2015 06:11:36 -0400
From: Mike Reublin NF4L
To: towertalk reflectorSubject: Re: [TowerTalk] Tower Build
Take a look here http://www.nn4zz.com/tiltplate.htm or Google for antenna
hinge. I built one, works great.
73, Mike NF4L
> On Jul 3, 2015, at 2:32 AM, Bryan WA7PRC wrote:
> > I'll throw my comments in here. A few years ago,> I erected my first tower,
>a used US Tower TX472> that came to me in GREAT shape. I installed a > Force12
>C-4XL 40/20/15/10m yagi on top. It has> 9 elements on a 30 foot 5-section
>boom. At first,> after tilting the tower over, I accessed the yagi> with the
>use of a 12' step ladder. Access to the> 10m ?/2 vertical on top of the mast
>above the yagi> was impossible.> > Then, it struck me that I could easily
>partially> disassemble the yagi by removing 1/4" bolts that> secure the
>sections of boom + element(s), and then> continue to tilt the tower down.
>Removing two> sections of boom + elements allows me to tilt the> tower to
>COMPLETELY horizontal. I now do all> antenna work with both feet on the
>ground. No> crane needed. To keep the yagi from pinwheeling,> I use a simple
>clamp assembly to hold the mast> when the yagi is partially disassembled.> I
>also recommend the books mentioned by Steve> K7LXC. His "Up The Tower" book
>answered all my> questions, and some I didn't know I had. The main> thing I
>got from the book was to try to do it> according to zoning and permitting
>requirements.> I did. His collaboration with Ward Silver N0AX> on "HF
>Tribander Performance - Test Methods &> Results" was a good read as well. When
>the C-4XL> came available, I jumped on it.> > vy 73 es gl,> Bryan WA7PRC>
>http://www.tinyurl.com/wa7prc-tower
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